Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: questão: qual é o polo com pts sendo 81
 ###Tabelas: CREATE TABLE current_and_past_rates (current_and_past_rates_id AUTO_INCREMENT PRIMARY KEY, From VARCHAR, Adult Rate VARCHAR, Development Rate VARCHAR, 16-17 Year Olds Rate VARCHAR, Apprentice Rate VARCHAR) CREATE TABLE first_class_bowling_statistics (first_class_bowling_statistics_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Matches INT, Overs VARCHAR, Maidens INT, Runs INT, Wickets INT, Average VARCHAR, Economy VARCHAR, 5w INT, 10w INT, Best Bowling VARCHAR) CREATE TABLE doubles_4–2 (doubles_4–2_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score VARCHAR) CREATE TABLE by_seasons_and_teams (by_seasons_and_teams_id AUTO_INCREMENT PRIMARY KEY, Season INT, Class VARCHAR, Team VARCHAR, Motorcycle VARCHAR, Type VARCHAR, Races INT, Wins INT, Podiums INT, Poles INT, Fastest Laps INT, Pts VARCHAR, Position VARCHAR) CREATE TABLE 3301–3400 (3301–3400_id AUTO_INCREMENT PRIMARY KEY, NGC number INT, Object type VARCHAR, Constellation VARCHAR, Right ascension ( J2000 ) VARCHAR, Declination ( J2000 ) VARCHAR)  
SELECT Poles FROM by_seasons_and_teams WHERE Pts = 81